English verb conjugation
COULD MOUTH

Regular verb: mouth - mouthed - mouthed

Affirmation

Simple form	V-ing form
I could mouth you could mouth she could mouth we could mouth you could mouth they could mouth	I could be mouthing you could be mouthing she could be mouthing we could be mouthing you could be mouthing they could be mouthing
Perfect	V-ing perfect
I could have mouthed you could have mouthed she could have mouthed we could have mouthed you could have mouthed they could have mouthed	I could have been mouthing you could have been mouthing she could have been mouthing we could have been mouthing you could have been mouthing they could have been mouthing

Negation

Simple form	V-ing form
I couldn't mouth you couldn't mouth she couldn't mouth we couldn't mouth you couldn't mouth they couldn't mouth	I couldn't be mouthing you couldn't be mouthing she couldn't be mouthing we couldn't be mouthing you couldn't be mouthing they couldn't be mouthing
Perfect	V-ing perfect
I couldn't have mouthed you couldn't have mouthed she couldn't have mouthed we couldn't have mouthed you couldn't have mouthed they couldn't have mouthed	I couldn't have been mouthing you couldn't have been mouthing she couldn't have been mouthing we couldn't have been mouthing you couldn't have been mouthing they couldn't have been mouthing

Interrogative form

Simple form	V-ing form
could I mouth? could you mouth? could she mouth? could we mouth? could you mouth? could they mouth?	could I be mouthing? could you be mouthing? could she be mouthing? could we be mouthing? could you be mouthing? could they be mouthing?
Perfect	V-ing perfect
could I have mouthed? could you have mouthed? could she have mouthed? could we have mouthed? could you have mouthed? could they have mouthed?	could I have been mouthing? could you have been mouthing? could she have been mouthing? could we have been mouthing? could you have been mouthing? could they have been mouthing?

Interro-negative form

Simple form	V-ing form
couldn't I mouth? couldn't you mouth? couldn't she mouth? couldn't we mouth? couldn't you mouth? couldn't they mouth?	couldn't I be mouthing? couldn't you be mouthing? couldn't she be mouthing? couldn't we be mouthing? couldn't you be mouthing? couldn't they be mouthing?
Perfect	V-ing perfect
couldn't I have mouthed? couldn't you have mouthed? couldn't she have mouthed? couldn't we have mouthed? couldn't you have mouthed? couldn't they have mouthed?	couldn't I have been mouthing? couldn't you have been mouthing? couldn't she have been mouthing? couldn't we have been mouthing? couldn't you have been mouthing? couldn't they have been mouthing?